Sealing device for the doors of coke ovens



Dec. 25, 1951 J. c. FOURMANOIT 2,579,917

SEALING DEVICE FOR THE DOORS OF COKE OVENS Filed Aug. 14, 1948 2 SHEETS SHEET 1 Arr Dec. 25, 1951 J. c. FOURMANOIT SEALING DEVICE FOR THE DOORS OF COKE OVENS Filed Aug. 14, 1948 2 SHEETS--SHEET 2 Patented Dec. 25, 1951 SEALING nievror: FORT-HE nooitsor x1; OVENS Jean Charles Fourmanoit,.Brussels,lBelgium Application August 14, 1948, Serial N0..41,286 .In Belgium August '27J19437 7 Claims.

,My presentinvention relates to a sealing deavice .Ifor the. doors of coke and like ovens based on .the use of a sealing frame which is removable andarticulated.

Devices of this kind are already known in which angle. irons, carried by a very flexible sheet of jmetaland formingknife blades for contact with .aguardfplate of the door frame, are used as seal- Jingelements.

:Su'chdevices involve various. defects which may 'lbesummarized. as follows ,LITheseknife blades tendto fold over because ,of .the lack of firmseating in. the very flexible metallic. sheet andof their lack of rigidity.

"2. The flexible .sheetand the asbestos lining thereof are very fragile (usually the metal sheet hasathicknessof 1 mm.) and often deteriorate, particularly when the dooris cleaned.

x3. The-knifeblade has a bearing widthof only .gabout 2 mm. It is not strongandhas often to be lrepaired. ,Moreoverit is..essential thatthesame .be cleaned, and .this often results in damage (thereto.

.4. The construction of, such a frame entails .careful :workinmaking .the .knife blade and in the riveting ofthe profiled members of the metal .sheet.

-Inrthepresent. invention the sealing frame is .-;f urm'shed with ajoining metallic seal having a .roundedsurface for .contactwith .the-guardplate .of the door frame.

,. =In'carryingthe-invention into practical effect the sheet metal .of the sealing frame to which ..the=. netallic.-seal is rigidly secured is a strong sheet .orplate, for examplerof mm. thickness,

withoutan asbestos lining.

The annexed drawings show, by way'of ex- ,ampleonly, a manner in which the invention mar-be carried into effect in practice.

F'ig. 1 is a horizontal sectional view illustrating the door, the fixed frame and the sealing means.

Figs. 2, 3, '4 and 5' are detail views illustrating .diiferent formszwhich the metallic seal may take.

In Fig. 1, of the accompanying drawings, l designates the .body .of the door-which is provided, in known fashion, with a refractory covering 2 and which enters the opening of the chamber Tend 3 is the door frame with a guard plate 3.

usuaLI provide a closure device and this, in the example illustrated, comprises bolts 4 which are engaged .with hearing: brackets B fixed to the frame 30f the door.

.,Fluidjtightness between the door of the coke oveniandlthe guard plates is. secured by means -oftaremovable sealing frame I whichinaccordance withthe'invention has the feature of inillustrate different *forms which it may take, but it is to be understood that'these forms are given eluding a jointing metallic -seal 8 which has a "rounded surface for contacting the guard plate and replacing the thin -knife blade formations which are i used in some known arrangements.

An important characteristic of the invention -is in addition that the "sheet 1, which is zrigidly connected to the seal 8, for instance by-welding, is preferably of robust sheetor plate, for example of a thickness of 5 mm. without a lining of asbestos.

At each "side of the-door, there is provided 'be- 'tweenthe sheet -or-platel and a' projection Son the door 'sidepa jointof asbestos or other suitable material comprising a simple cord l0, and

the assembly of parts I, 8 and I0 is, inthe example illustrated, applied-to the door by clamps H and bolts l2. Brackets l3which arerigidly secured to the door, support screws 14 which apply the joint -8 to the bearing face of -theframe and thus produce the sealing effect.

The clamps II and bolts l2 are uniformly dis: tributed around the 'whole of the perimeter of the door.

Aframe as describedhas the advantage'of not presenting-a thinprofile or a surface which is liable'to deteriorateeither as a result of temperatureaction or of the movements which it undergoes when in use in 'a hot and oxidising atmosphere, orby reason of the action of tools or appliances usedto'clean the door.

The seal 10 Jmay'be of "any appropriate form and'm-ay-be .of various "shapes "at the 'part connectedto the sheetjor plate 1. Thus thecontact surface of this seal may be an arcof a circle, be ovalgand soongin section. Figs. 2,3, 4 and*5 by wayof example only and are not exhaustive.

What is essential is the part 16 being of rounded shape (see Fig.2) since this ensuresthe formation on the metallic seal '8 0f adeposit ll of pitch ortar which opposes "any passageof gas.

Oncemade, these deposits of pitch :or tardo nothave toberemoved and it 'isnotnecessary, at each discharge of the oven to pleanthe projecting ledge of the guard plate facing the frame.

'Thus apermanent sealing is produced, "so to say, bytheoperation of the oven itself andin a manner which may be termed automatic.

The device described thus has considerable advantages of a constructional nature by reason of the rigidity and the simplicityof the frame and of the absence of delicate manufacturingoperation, and in addition it provides .a great economy of labour in the course of its use.

What I claim is:

1. In combination with a coke oven door, a stationary metal door frame provided with an outer plane sealing surface surrounding the opening in said frame, a removable, transversely rigid, sealing frame, said removable frame being provided, on its side facing said sealing surface of said stationary door frame, with a jointing metallic seal having a half-rounded shape, means carried by the door and acting on the other side of said removable frame near the outer periphery thereof for applying said jointing metallic seal against said sealing surface of said stationary frame, a gasket of heat-resisting material between said rigid sealing frame and a surface of said door disposed parallel to the adjacent surface of the sealing frame, said gasket having a curved surface in contact with said adjacent surface of the sealing frame substantially along the inner peripheral edge of the latter, and clamping means acting on the opposite surface of said removable rigid sealing frame adjacent the inner periphery of the latter to apply said sealing frame I and gasket against the door so as to form an articulated joint.

2. A combination as claimed in claim 1, in which said gasket has a substantially circular cross-section.

3. A combination as claimed in claim 1, in which 'said removable rigid sealing frame is formed of sheet iron plate having a thickness of about 5 mm.

4. In combination with a coke oven door,

stationary metal door frame provided with an outer plane sealing surface surrounding the opening in said frame, a removable, transversely rigid, sealing frame, said removable frame being provided, on its side facing said sealing surface of said stationary door frame, with a jointing metallic seal having a half rounded shape, brackets rigidly secured to the door, means carried by said brackets and acting on the other side of said removable frame near the outer periphery thereof for applying said jointing metallic seal against said sealing surface of said stationary frame, a gasket of heat-resisting material between said rigid removable sealing frame and a surface 01 said door disposed parallel to the adjacent surface of the sealing frame, said gasket having a curved surface in contact with said adjacent sur- 7 face of the sealing frame substantially along the inner periphery of the latter, and clamping means carried by the door and including edge portions acting on the opposite surface of said removable frame adjacent the inner periphery of l the latter to apply said sealing frame and gasket against the 'door.

5. In combination with a coke oven door, a staedge of the latter, and clamping means carried by the door and including edge portions acting on the opposite surface of said removable rigid sealing frame adjacent the inner periphery of the latter to apply said sealing frame and gasket against the door.

' 6. In combination with a coke oven door, a stationary metal door frame provided with an outer plane sealing surface surrounding the opening in said frame, a removable, transversely rigid, sealing frame, said removable frame being provided, on its side facing said sealing surface of said stationary door frame, with a jointing metallic seal having a half-rounded shape, brackets rigidly secured to the door, means carried by said brackets and acting on the other side of said removable frame near the outer periphery thereof for applyling said jointing metallic seal against said sealing surface of said stationary frame, a projecting peripheral flange on said door, a gasket between said peripheral flange of the door and said removable rigid sealing frame, substantially along the inner peripheral edge of the latter, said gasket having a curved surface in contact with the adjacent surface of said sealing frame, and clamping means acting on said removable rigid sealing frame and carried by the door to apply said sealing frame and gasket against the door, said clamping means comprising bolts passing through said peripheral flange of the door and clamps mounted on said bolts and having edge portions acting on the other surface of said removable rigid sealing frame adjacent the inner periphery of the latter.

'7. In combination with a coke oven door, a stationary metal door frame provided with an outer plane sealing surface surrounding the opening in said frame, a removable rigid sealing frame, said removable frame being provided, on its face situated opposite said sealing surface of said stationary door frame, with a jointing me- 7 tallic seal having a half-rounded shape, brackets on itsside facing said sealing surface of said stationary door frame, with a jointing metallic seal having a half rounded shape, brackets rigidly secured to the door, means carried by said brackets and acting on the other side of said removable sealing frame near the outer periphery thereof for applying said jointing metallic seal against said sealing surface of said stationary frame, a gasket formed by a simple cord of heatresistant material between said rigid removable sealing frame and a surface of said door disposed, parallel to the adjacent surface of the sealing frame substantially along the inner peripheral rigidly secured to the door, means carried by said brackets and acting on the periphery of said removable frame for applying said jointing metallic seal against said sealing surface of said stationary frame, a joint formed of a simple cord of heat-resistant material between a projection of the door and said removable rigid frame, substantially along the lateral edge of the latter, situated towards the door, and means acting on said removable frame and carried by the door to apply said joint against the door, the said jointcooperating with said rigid sealing frame so as to form an articulation whereby the latter, notwithstanding its rigidly, is adapted to rock on its door side whilst said' half-rounded A metallic seal is kept in contact with said stationary frame. a JEAN CHARLES FOURMANQIT.

REFERENCES orrsn The following references are of record in the file of this patent;

UNITED STATES-PATENTS y Date i 

